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__author__="phnor"
__date__ ="$23 juil. 2009 02:43:26$"

from visual import *

floor = box (pos=(0,0,0), length=4, height=0.5, width=4, color=color.blue)
ball = sphere (pos=(0,10,0), radius=1, color=color.red)
ball.velocity = vector(0,-1,0)
dt = 0.01

while 1:
    rate (100)
    ball.pos = ball.pos + ball.velocity*dt
    if ball.y < ball.radius:
        ball.velocity.y = abs(ball.velocity.y)
    else:
        ball.velocity.y = ball.velocity.y - 9.8*dt
